Someone who is Straight Edge, but still is a Christ follower. That simple. The only differences are this:
1. No Drugs
2. No Premarital sex (apposed to no promiscuous sex)
3. No Alcohol
4. NOT every CSE kid is a self-righteous jerk.
(YES, we still have a good time. We just party sober, oh and that stupid myth that Christians can't have tattoos is ridiculous. Were usually covered.)

Slim differences, almost nothing different. Though, a lot of sXe kids don't believe in Christ. There are a few.

Eric: "Hey bud, I thought edge kids had no religion?"
Kyle: "I don't have religion, I have a relationship with Christ and I keep my body clean of Drugs and Alcohol. Represent Christian Straight Edge."